Concrete-column reenforcement



G. E. THACKRAY. CONCRETE-COLUMN REENFORCEMENT.

. APPLICATION FILED MAX 2.4, 1920. 1,413,199

Patented Apr. 18, 1922 w a W W res GEORGE E. THAO KRAY, OF WESTMONT BOROUGH, PENNSYLVANIA.

CONCRETE-COLUMN REENFORCEMENT.

i at. area.

Application filed May 24,

To all whom it may concern Be it known that I, GEORGE E. THACKRAY, a citizen of the United States, and a resident of the borough of l Vestmont, county of (eambria. and Stateof Pennsylvania, have in vented certain new and useful Improvements in Concrete-Column Reenforcement; and I do hereby declare the following to be a full, clear and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

invention relatesto reenforcement for concrete, with particular reference to a series of hoops or continuous spiral type of reenter-cement used as one of the members in reenforcing concrete columns for buildings, piles, struts and other similar constructions.

My invention generally consists of a rod of steel or other metal wound in the form of a helix, which may be of any desired diameter,forming coils which may be an size and distance apart to suit the design. also make my reenforcement of a plurality of hoops, the ends of which may be welded or otherwise joined and arrangedsubStan tially parallel and spaced apart as desired.

In order to maintain the coils in proper relation I secure them at two op'positepoints to'a stiffening member or members, which stiffening members may be of steel or other metal formed of a fiat, angle,channel, Z bar or any other suitable shape. 1 The stifi'enlng members are provided with holes or perforations at any suitable intervals corresponding to the desired distance apart of the coils, and the coils are secured to the stiffening members by means of wire staples, or by twisted wires. The free ends of the staples are inserted through the perforations of the stiff ening members with the loop surroundlng the rod of the coil and the free ends are bent or clinched, thus securing the coil in position.

fastening members to the coils in a slightly loose manner so that the coils while secured in position may be rotated in order that the structure may be collapsed, being almost flat for shipment. This collapsing is accom plished by keeping the stiffening bars parallel and shifting them relatively; longitudi-' nally thereby causing the coils .to rotate slightly in their fastenings as the stilfemng members approach eachother.

I generally prefer to use two stlfi' enlng Iprefer to arrange these staples or other Specification of Letters Patent. Patented Apr. 18, 1922.

1920. Serial No. 383,624.

bars, but may use three or more spaced equally apart, but in order to collapse the,

column reenforcement the stiffening members'must be slid together so that they are in adjacent or in opposite positions on the coil proper preparatory to collapsing same. This permits these reenforcements to be readily shipped in railroad cars, wagons, or

otherwise, and when received at points of use may be opened to usable forms.

I prefer to secure the coils to the stiffening bars somewhat loosely or in such a'manner to permit collapsing or restoration of the structure and also permit the stiffening bars to be slid around the coil for the above described.

Having thus given a general description of my invention, I will now, in order to make the matter more clear, refer to the annexed sheet of drawings, which forms part of this specificatiomand in which like characters refer to like parts. V

Figure 1 is a side elevation of concrete column reenforcement embodying my in vention; Figure 2 is a top plan'view of the column reenforcement shown in Figure '1; Figures 3 and 4' are detail views illustrating the manner. of attaching the helical rod to the reenforcing bars drawn on a large scale; Figure 5 isva top plan View of the bottom clinching die Figure 6 is a bottom plan view of the top clinching die or'tool; Figure 7 is a transverse section through the clinching dies and one of the reenforcing bars at the end of the working stroke, the helical rod and staple being shown in elevation; Figure 8 is a transverse section through one of the rcent'orcin'g bars with the helical rod and staple attached thereto shown in elevation; Figure 9 is a longitudinal sectional elevation through one of the reenforcing bars taken at right angles to the. portion shown in Figure 8; Figure 10 illustrates an angle stiffener secured to a coil.

Referring now to the characters of reference on the drawings :-1 is'the column reenforcement as a whole, 2 are the stiffening bars shown as of channel section although they may be of any other shape desired, 3 are the channel legs or flanges, 4 is the channel web, 5 are holes or erforations in the channel web, 6 is the helical rod preferably made continuous end to end, 7 are the staples for securing the coil to the stiifenin members having their ends 8 bent or clinched as shown? is upper die or tool for driving,

purpose I and conform to helical rod 6 as illustrated,

12 is the lower clinching die provided with the groove 13 adapted to receive the flanges of the, channel and with depressions or notches, 14 for receiving the ends of the stapies, these notches being curved as illustrated so as to cause bending or clinching of th stapl s when they are driven or forced iIitO ppsl ibl I Figure 10 shows anangle 17 instead of a. channel. and 18 is a perfo ation in the angle toreceive the'free endv of the staple or other securinginember.

The manufacture of these reenforcements is, accomplished as follows: The rod 6 is coiled. on a mandrel or other suitable machine to the diameter required for construction, which. may of course be made to suit an y"size of column and the size of the rod may also be such as to withstand thestress of use, 'The stiffening members as shown canbe made of any length and any number of" holes punchedltherein at any distance apart to suitthedesired design. The coiled rod 6 is then superimposed on a bar or long anvil similar to a tinners stake and provided preferably with a plurality of lower dies 12. Staples are then placed in position in the perforations of the stiffening member over dies, 12 with their free ends projecting into the notche l t, and the tool 9 is then pressed or driven downward, causing the staplesto assume theposition illustrated in Figure 4 thereby bending the ends and clinching them as illustrated and securing the coils in position. I

Someof the advantages of my construction' are that all the parts are readily procured and can be assembled without expensive tools. This construction has the advantage of securing the stiffening members loosely to the coils, allowing them to be collapsed for easy shipment preparatory to use, thus allowing full car or wagon loads the lowest rates. 7

Although I have described and illustrated my invention in considerable detail, I do not wish to be limited to the exact and specific "details thereof asshown and described but ma use such modifications'in substitutions for, or equivalents thereof, as

are embraced within the scope, of my inventiomj o r as pointed out in the claims.

Having thus described my invention, what I claim and desireto secure by Letters Patentis I r LA; cohifmn reenforcement-comprising a continuous helical coil, a plurality of stifien ing members rotatively and slidably secured thereto-by staples, loosely embracing the V signature.

coils, passing over the coils, the free ends a of whicl'i are'abruptly bentand clinched the coil and stiffeners may be collapsed when the stiifeners are together or opposite.

2. Column reenforcement comprising a continuous helical coil, a number of stiffening members each provided with a plurality of holes, staples/passing over the coils and through said holes and loosely embracing the coils, the free ends of which staples are abruptly bent and clinched against the stiffening members in suchva way as to secure said. coil slidably and rotatively in position on said stiffening members, whereby the coils and stiffeners may be collapsed when the stilfeners are together or opposite.

Column reenforcement comprising a continuous helical coil, two or more stiffening members, perforations in saidstiffening members, andstaples, loosely embracing the coils, the free ends of which pass through said perforations and are bent at an angle and clinched against the stiffenersin such a manner as to secure the stifl'eners slidably and rotativel-y on the coils, whereby the coils and stilfenerslmay becollapsed when thestifleners are together or opposite.

Column reenforcement comprising a continuous helical coil, two or more stiffenhers is securely though slidably and rotatively mounted on the coil, whereby the coil and stifl'eners may be collapsed whenthe stiffener-s are togetheror opposite.

5. Col umn reenforcement, comprising a continuous helical coil,'two. or more stiffening members, each provided with a plurality of perforationsfarranged at intervals to correspond to, the pitch desired; staples, the free ends of which pass through said perfo rations with their loop ends around the rod of said 'coil, the free ends of the staples beingbent and clinched against the stiffening members to secure the parts in place, said staples being slightly looseior provided with a very smallclearaiice around saidrodtoallow relativerotary and. sliding movement 7 stiffening members,'where- V by the coil and stifl'enihgmeinbers. inay be collapsed when the; stilfeners are together of the coils and In' witness whereofl hereunto i 

